1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Handling of a single switch port
5 * Copyright (c) 2017 Savoir-faire Linux Inc.
6 * Vivien Didelot <vivien.didelot@savoirfairelinux.com>
9 #include <linux/if_bridge.h>
10 #include <linux/notifier.h>
11 #include <linux/of_mdio.h>
12 #include <linux/of_net.h>
17 * dsa_port_notify - Notify the switching fabric of changes to a port
18 * @dp: port on which change occurred
19 * @e: event, must be of type DSA_NOTIFIER_*
20 * @v: event-specific value.
22 * Notify all switches in the DSA tree that this port's switch belongs to,
23 * including this switch itself, of an event. Allows the other switches to
24 * reconfigure themselves for cross-chip operations. Can also be used to
25 * reconfigure ports without net_devices (CPU ports, DSA links) whenever
26 * a user port's state changes.
28 static int dsa_port_notify(const struct dsa_port *dp, unsigned long e, void *v)
30 return dsa_tree_notify(dp->ds->dst, e, v);
33 static void dsa_port_notify_bridge_fdb_flush(const struct dsa_port *dp)
35 struct net_device *brport_dev = dsa_port_to_bridge_port(dp);
36 struct switchdev_notifier_fdb_info info = {
41 /* When the port becomes standalone it has already left the bridge.
42 * Don't notify the bridge in that case.
47 call_switchdev_notifiers(SWITCHDEV_FDB_FLUSH_TO_BRIDGE,
48 brport_dev, &info.info, NULL);
51 static void dsa_port_fast_age(const struct dsa_port *dp)
53 struct dsa_switch *ds = dp->ds;
55 if (!ds->ops->port_fast_age)
58 ds->ops->port_fast_age(ds, dp->index);
60 dsa_port_notify_bridge_fdb_flush(dp);
63 static bool dsa_port_can_configure_learning(struct dsa_port *dp)
65 struct switchdev_brport_flags flags = {
68 struct dsa_switch *ds = dp->ds;
71 if (!ds->ops->port_bridge_flags || !ds->ops->port_pre_bridge_flags)
74 err = ds->ops->port_pre_bridge_flags(ds, dp->index, flags, NULL);
78 int dsa_port_set_state(struct dsa_port *dp, u8 state, bool do_fast_age)
80 struct dsa_switch *ds = dp->ds;
83 if (!ds->ops->port_stp_state_set)
86 ds->ops->port_stp_state_set(ds, port, state);
88 if (!dsa_port_can_configure_learning(dp) ||
89 (do_fast_age && dp->learning)) {
90 /* Fast age FDB entries or flush appropriate forwarding database
91 * for the given port, if we are moving it from Learning or
92 * Forwarding state, to Disabled or Blocking or Listening state.
93 * Ports that were standalone before the STP state change don't
94 * need to fast age the FDB, since address learning is off in
98 if ((dp->stp_state == BR_STATE_LEARNING ||
99 dp->stp_state == BR_STATE_FORWARDING) &&
100 (state == BR_STATE_DISABLED ||
101 state == BR_STATE_BLOCKING ||
102 state == BR_STATE_LISTENING))
103 dsa_port_fast_age(dp);
106 dp->stp_state = state;
111 static void dsa_port_set_state_now(struct dsa_port *dp, u8 state,
116 err = dsa_port_set_state(dp, state, do_fast_age);
118 pr_err("DSA: failed to set STP state %u (%d)\n", state, err);
121 int dsa_port_enable_rt(struct dsa_port *dp, struct phy_device *phy)
123 struct dsa_switch *ds = dp->ds;
124 int port = dp->index;
127 if (ds->ops->port_enable) {
128 err = ds->ops->port_enable(ds, port, phy);
134 dsa_port_set_state_now(dp, BR_STATE_FORWARDING, false);
137 phylink_start(dp->pl);
142 int dsa_port_enable(struct dsa_port *dp, struct phy_device *phy)
147 err = dsa_port_enable_rt(dp, phy);
153 void dsa_port_disable_rt(struct dsa_port *dp)
155 struct dsa_switch *ds = dp->ds;
156 int port = dp->index;
159 phylink_stop(dp->pl);
162 dsa_port_set_state_now(dp, BR_STATE_DISABLED, false);
164 if (ds->ops->port_disable)
165 ds->ops->port_disable(ds, port);
168 void dsa_port_disable(struct dsa_port *dp)
171 dsa_port_disable_rt(dp);
175 static int dsa_port_inherit_brport_flags(struct dsa_port *dp,
176 struct netlink_ext_ack *extack)
178 const unsigned long mask = BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD |
180 struct net_device *brport_dev = dsa_port_to_bridge_port(dp);
183 for_each_set_bit(flag, &mask, 32) {
184 struct switchdev_brport_flags flags = {0};
186 flags.mask = BIT(flag);
188 if (br_port_flag_is_set(brport_dev, BIT(flag)))
189 flags.val = BIT(flag);
191 err = dsa_port_bridge_flags(dp, flags, extack);
192 if (err && err != -EOPNOTSUPP)
199 static void dsa_port_clear_brport_flags(struct dsa_port *dp)
201 const unsigned long val = BR_FLOOD | BR_MCAST_FLOOD | BR_BCAST_FLOOD;
202 const unsigned long mask = BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD |
206 for_each_set_bit(flag, &mask, 32) {
207 struct switchdev_brport_flags flags = {0};
209 flags.mask = BIT(flag);
210 flags.val = val & BIT(flag);
212 err = dsa_port_bridge_flags(dp, flags, NULL);
213 if (err && err != -EOPNOTSUPP)
215 "failed to clear bridge port flag %lu: %pe\n",
216 flags.val, ERR_PTR(err));
220 static int dsa_port_switchdev_sync_attrs(struct dsa_port *dp,
221 struct netlink_ext_ack *extack)
223 struct net_device *brport_dev = dsa_port_to_bridge_port(dp);
224 struct net_device *br = dp->bridge_dev;
227 err = dsa_port_inherit_brport_flags(dp, extack);
231 err = dsa_port_set_state(dp, br_port_get_stp_state(brport_dev), false);
232 if (err && err != -EOPNOTSUPP)
235 err = dsa_port_vlan_filtering(dp, br_vlan_enabled(br), extack);
236 if (err && err != -EOPNOTSUPP)
239 err = dsa_port_ageing_time(dp, br_get_ageing_time(br));
240 if (err && err != -EOPNOTSUPP)
246 static void dsa_port_switchdev_unsync_attrs(struct dsa_port *dp)
248 /* Configure the port for standalone mode (no address learning,
250 * The bridge only emits SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS events
251 * when the user requests it through netlink or sysfs, but not
252 * automatically at port join or leave, so we need to handle resetting
253 * the brport flags ourselves. But we even prefer it that way, because
254 * otherwise, some setups might never get the notification they need,
255 * for example, when a port leaves a LAG that offloads the bridge,
256 * it becomes standalone, but as far as the bridge is concerned, no
259 dsa_port_clear_brport_flags(dp);
261 /* Port left the bridge, put in BR_STATE_DISABLED by the bridge layer,
262 * so allow it to be in BR_STATE_FORWARDING to be kept functional
264 dsa_port_set_state_now(dp, BR_STATE_FORWARDING, true);
266 /* VLAN filtering is handled by dsa_switch_bridge_leave */
268 /* Ageing time may be global to the switch chip, so don't change it
269 * here because we have no good reason (or value) to change it to.
273 static int dsa_tree_find_bridge_num(struct dsa_switch_tree *dst,
274 struct net_device *bridge_dev)
278 /* When preparing the offload for a port, it will have a valid
279 * dp->bridge_dev pointer but a not yet valid dp->bridge_num.
280 * However there might be other ports having the same dp->bridge_dev
281 * and a valid dp->bridge_num, so just ignore this port.
283 list_for_each_entry(dp, &dst->ports, list)
284 if (dp->bridge_dev == bridge_dev && dp->bridge_num != -1)
285 return dp->bridge_num;
290 static void dsa_port_bridge_tx_fwd_unoffload(struct dsa_port *dp,
291 struct net_device *bridge_dev)
293 struct dsa_switch_tree *dst = dp->ds->dst;
294 int bridge_num = dp->bridge_num;
295 struct dsa_switch *ds = dp->ds;
297 /* No bridge TX forwarding offload => do nothing */
298 if (!ds->ops->port_bridge_tx_fwd_unoffload || dp->bridge_num == -1)
303 /* Check if the bridge is still in use, otherwise it is time
304 * to clean it up so we can reuse this bridge_num later.
306 if (!dsa_tree_find_bridge_num(dst, bridge_dev))
307 clear_bit(bridge_num, &dst->fwd_offloading_bridges);
309 /* Notify the chips only once the offload has been deactivated, so
310 * that they can update their configuration accordingly.
312 ds->ops->port_bridge_tx_fwd_unoffload(ds, dp->index, bridge_dev,
316 static bool dsa_port_bridge_tx_fwd_offload(struct dsa_port *dp,
317 struct net_device *bridge_dev)
319 struct dsa_switch_tree *dst = dp->ds->dst;
320 struct dsa_switch *ds = dp->ds;
323 if (!ds->ops->port_bridge_tx_fwd_offload)
326 bridge_num = dsa_tree_find_bridge_num(dst, bridge_dev);
327 if (bridge_num < 0) {
328 /* First port that offloads TX forwarding for this bridge */
329 bridge_num = find_first_zero_bit(&dst->fwd_offloading_bridges,
330 DSA_MAX_NUM_OFFLOADING_BRIDGES);
331 if (bridge_num >= ds->num_fwd_offloading_bridges)
334 set_bit(bridge_num, &dst->fwd_offloading_bridges);
337 dp->bridge_num = bridge_num;
339 /* Notify the driver */
340 err = ds->ops->port_bridge_tx_fwd_offload(ds, dp->index, bridge_dev,
343 dsa_port_bridge_tx_fwd_unoffload(dp, bridge_dev);
350 int dsa_port_bridge_join(struct dsa_port *dp, struct net_device *br,
351 struct netlink_ext_ack *extack)
353 struct dsa_notifier_bridge_info info = {
354 .tree_index = dp->ds->dst->index,
355 .sw_index = dp->ds->index,
359 struct net_device *dev = dp->slave;
360 struct net_device *brport_dev;
364 /* Here the interface is already bridged. Reflect the current
365 * configuration so that drivers can program their chips accordingly.
369 brport_dev = dsa_port_to_bridge_port(dp);
371 err = dsa_broadcast(DSA_NOTIFIER_BRIDGE_JOIN, &info);
375 tx_fwd_offload = dsa_port_bridge_tx_fwd_offload(dp, br);
377 err = switchdev_bridge_port_offload(brport_dev, dev, dp,
378 &dsa_slave_switchdev_notifier,
379 &dsa_slave_switchdev_blocking_notifier,
380 tx_fwd_offload, extack);
382 goto out_rollback_unbridge;
384 err = dsa_port_switchdev_sync_attrs(dp, extack);
386 goto out_rollback_unoffload;
390 out_rollback_unoffload:
391 switchdev_bridge_port_unoffload(brport_dev, dp,
392 &dsa_slave_switchdev_notifier,
393 &dsa_slave_switchdev_blocking_notifier);
394 out_rollback_unbridge:
395 dsa_broadcast(DSA_NOTIFIER_BRIDGE_LEAVE, &info);
397 dp->bridge_dev = NULL;
401 void dsa_port_pre_bridge_leave(struct dsa_port *dp, struct net_device *br)
403 struct net_device *brport_dev = dsa_port_to_bridge_port(dp);
405 switchdev_bridge_port_unoffload(brport_dev, dp,
406 &dsa_slave_switchdev_notifier,
407 &dsa_slave_switchdev_blocking_notifier);
410 void dsa_port_bridge_leave(struct dsa_port *dp, struct net_device *br)
412 struct dsa_notifier_bridge_info info = {
413 .tree_index = dp->ds->dst->index,
414 .sw_index = dp->ds->index,
420 /* Here the port is already unbridged. Reflect the current configuration
421 * so that drivers can program their chips accordingly.
423 dp->bridge_dev = NULL;
425 dsa_port_bridge_tx_fwd_unoffload(dp, br);
427 err = dsa_broadcast(DSA_NOTIFIER_BRIDGE_LEAVE, &info);
430 "port %d failed to notify DSA_NOTIFIER_BRIDGE_LEAVE: %pe\n",
431 dp->index, ERR_PTR(err));
433 dsa_port_switchdev_unsync_attrs(dp);
436 int dsa_port_lag_change(struct dsa_port *dp,
437 struct netdev_lag_lower_state_info *linfo)
439 struct dsa_notifier_lag_info info = {
440 .sw_index = dp->ds->index,
448 /* On statically configured aggregates (e.g. loadbalance
449 * without LACP) ports will always be tx_enabled, even if the
450 * link is down. Thus we require both link_up and tx_enabled
451 * in order to include it in the tx set.
453 tx_enabled = linfo->link_up && linfo->tx_enabled;
455 if (tx_enabled == dp->lag_tx_enabled)
458 dp->lag_tx_enabled = tx_enabled;
460 return dsa_port_notify(dp, DSA_NOTIFIER_LAG_CHANGE, &info);
463 int dsa_port_lag_join(struct dsa_port *dp, struct net_device *lag,
464 struct netdev_lag_upper_info *uinfo,
465 struct netlink_ext_ack *extack)
467 struct dsa_notifier_lag_info info = {
468 .sw_index = dp->ds->index,
473 struct net_device *bridge_dev;
476 dsa_lag_map(dp->ds->dst, lag);
479 err = dsa_port_notify(dp, DSA_NOTIFIER_LAG_JOIN, &info);
483 bridge_dev = netdev_master_upper_dev_get(lag);
484 if (!bridge_dev || !netif_is_bridge_master(bridge_dev))
487 err = dsa_port_bridge_join(dp, bridge_dev, extack);
489 goto err_bridge_join;
494 dsa_port_notify(dp, DSA_NOTIFIER_LAG_LEAVE, &info);
497 dsa_lag_unmap(dp->ds->dst, lag);
501 void dsa_port_pre_lag_leave(struct dsa_port *dp, struct net_device *lag)
504 dsa_port_pre_bridge_leave(dp, dp->bridge_dev);
507 void dsa_port_lag_leave(struct dsa_port *dp, struct net_device *lag)
509 struct dsa_notifier_lag_info info = {
510 .sw_index = dp->ds->index,
519 /* Port might have been part of a LAG that in turn was
520 * attached to a bridge.
523 dsa_port_bridge_leave(dp, dp->bridge_dev);
525 dp->lag_tx_enabled = false;
528 err = dsa_port_notify(dp, DSA_NOTIFIER_LAG_LEAVE, &info);
531 "port %d failed to notify DSA_NOTIFIER_LAG_LEAVE: %pe\n",
532 dp->index, ERR_PTR(err));
534 dsa_lag_unmap(dp->ds->dst, lag);
537 /* Must be called under rcu_read_lock() */
538 static bool dsa_port_can_apply_vlan_filtering(struct dsa_port *dp,
540 struct netlink_ext_ack *extack)
542 struct dsa_switch *ds = dp->ds;
545 /* VLAN awareness was off, so the question is "can we turn it on".
546 * We may have had 8021q uppers, those need to go. Make sure we don't
547 * enter an inconsistent state: deny changing the VLAN awareness state
548 * as long as we have 8021q uppers.
550 if (vlan_filtering && dsa_is_user_port(ds, dp->index)) {
551 struct net_device *upper_dev, *slave = dp->slave;
552 struct net_device *br = dp->bridge_dev;
553 struct list_head *iter;
555 netdev_for_each_upper_dev_rcu(slave, upper_dev, iter) {
556 struct bridge_vlan_info br_info;
559 if (!is_vlan_dev(upper_dev))
562 vid = vlan_dev_vlan_id(upper_dev);
564 /* br_vlan_get_info() returns -EINVAL or -ENOENT if the
565 * device, respectively the VID is not found, returning
566 * 0 means success, which is a failure for us here.
568 err = br_vlan_get_info(br, vid, &br_info);
570 NL_SET_ERR_MSG_MOD(extack,
571 "Must first remove VLAN uppers having VIDs also present in bridge");
577 if (!ds->vlan_filtering_is_global)
580 /* For cases where enabling/disabling VLAN awareness is global to the
581 * switch, we need to handle the case where multiple bridges span
582 * different ports of the same switch device and one of them has a
583 * different setting than what is being requested.
585 for (i = 0; i < ds->num_ports; i++) {
586 struct net_device *other_bridge;
588 other_bridge = dsa_to_port(ds, i)->bridge_dev;
591 /* If it's the same bridge, it also has same
592 * vlan_filtering setting => no need to check
594 if (other_bridge == dp->bridge_dev)
596 if (br_vlan_enabled(other_bridge) != vlan_filtering) {
597 NL_SET_ERR_MSG_MOD(extack,
598 "VLAN filtering is a global setting");
605 int dsa_port_vlan_filtering(struct dsa_port *dp, bool vlan_filtering,
606 struct netlink_ext_ack *extack)
608 struct dsa_switch *ds = dp->ds;
612 if (!ds->ops->port_vlan_filtering)
615 /* We are called from dsa_slave_switchdev_blocking_event(),
616 * which is not under rcu_read_lock(), unlike
617 * dsa_slave_switchdev_event().
620 apply = dsa_port_can_apply_vlan_filtering(dp, vlan_filtering, extack);
625 if (dsa_port_is_vlan_filtering(dp) == vlan_filtering)
628 err = ds->ops->port_vlan_filtering(ds, dp->index, vlan_filtering,
633 if (ds->vlan_filtering_is_global)
634 ds->vlan_filtering = vlan_filtering;
636 dp->vlan_filtering = vlan_filtering;
641 /* This enforces legacy behavior for switch drivers which assume they can't
642 * receive VLAN configuration when enslaved to a bridge with vlan_filtering=0
644 bool dsa_port_skip_vlan_configuration(struct dsa_port *dp)
646 struct dsa_switch *ds = dp->ds;
651 return (!ds->configure_vlan_while_not_filtering &&
652 !br_vlan_enabled(dp->bridge_dev));
655 int dsa_port_ageing_time(struct dsa_port *dp, clock_t ageing_clock)
657 unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock);
658 unsigned int ageing_time = jiffies_to_msecs(ageing_jiffies);
659 struct dsa_notifier_ageing_time_info info;
662 info.ageing_time = ageing_time;
664 err = dsa_port_notify(dp, DSA_NOTIFIER_AGEING_TIME, &info);
668 dp->ageing_time = ageing_time;
673 int dsa_port_pre_bridge_flags(const struct dsa_port *dp,
674 struct switchdev_brport_flags flags,
675 struct netlink_ext_ack *extack)
677 struct dsa_switch *ds = dp->ds;
679 if (!ds->ops->port_pre_bridge_flags)
682 return ds->ops->port_pre_bridge_flags(ds, dp->index, flags, extack);
685 int dsa_port_bridge_flags(struct dsa_port *dp,
686 struct switchdev_brport_flags flags,
687 struct netlink_ext_ack *extack)
689 struct dsa_switch *ds = dp->ds;
692 if (!ds->ops->port_bridge_flags)
695 err = ds->ops->port_bridge_flags(ds, dp->index, flags, extack);
699 if (flags.mask & BR_LEARNING) {
700 bool learning = flags.val & BR_LEARNING;
702 if (learning == dp->learning)
705 if ((dp->learning && !learning) &&
706 (dp->stp_state == BR_STATE_LEARNING ||
707 dp->stp_state == BR_STATE_FORWARDING))
708 dsa_port_fast_age(dp);
710 dp->learning = learning;
716 int dsa_port_mtu_change(struct dsa_port *dp, int new_mtu,
719 struct dsa_notifier_mtu_info info = {
720 .sw_index = dp->ds->index,
721 .targeted_match = targeted_match,
726 return dsa_port_notify(dp, DSA_NOTIFIER_MTU, &info);
729 int dsa_port_fdb_add(struct dsa_port *dp, const unsigned char *addr,
732 struct dsa_notifier_fdb_info info = {
733 .sw_index = dp->ds->index,
739 return dsa_port_notify(dp, DSA_NOTIFIER_FDB_ADD, &info);
742 int dsa_port_fdb_del(struct dsa_port *dp, const unsigned char *addr,
745 struct dsa_notifier_fdb_info info = {
746 .sw_index = dp->ds->index,
753 return dsa_port_notify(dp, DSA_NOTIFIER_FDB_DEL, &info);
756 int dsa_port_host_fdb_add(struct dsa_port *dp, const unsigned char *addr,
759 struct dsa_notifier_fdb_info info = {
760 .sw_index = dp->ds->index,
765 struct dsa_port *cpu_dp = dp->cpu_dp;
768 err = dev_uc_add(cpu_dp->master, addr);
772 return dsa_port_notify(dp, DSA_NOTIFIER_HOST_FDB_ADD, &info);
775 int dsa_port_host_fdb_del(struct dsa_port *dp, const unsigned char *addr,
778 struct dsa_notifier_fdb_info info = {
779 .sw_index = dp->ds->index,
784 struct dsa_port *cpu_dp = dp->cpu_dp;
787 err = dev_uc_del(cpu_dp->master, addr);
791 return dsa_port_notify(dp, DSA_NOTIFIER_HOST_FDB_DEL, &info);
794 int dsa_port_fdb_dump(struct dsa_port *dp, dsa_fdb_dump_cb_t *cb, void *data)
796 struct dsa_switch *ds = dp->ds;
797 int port = dp->index;
799 if (!ds->ops->port_fdb_dump)
802 return ds->ops->port_fdb_dump(ds, port, cb, data);
805 int dsa_port_mdb_add(const struct dsa_port *dp,
806 const struct switchdev_obj_port_mdb *mdb)
808 struct dsa_notifier_mdb_info info = {
809 .sw_index = dp->ds->index,
814 return dsa_port_notify(dp, DSA_NOTIFIER_MDB_ADD, &info);
817 int dsa_port_mdb_del(const struct dsa_port *dp,
818 const struct switchdev_obj_port_mdb *mdb)
820 struct dsa_notifier_mdb_info info = {
821 .sw_index = dp->ds->index,
826 return dsa_port_notify(dp, DSA_NOTIFIER_MDB_DEL, &info);
829 int dsa_port_host_mdb_add(const struct dsa_port *dp,
830 const struct switchdev_obj_port_mdb *mdb)
832 struct dsa_notifier_mdb_info info = {
833 .sw_index = dp->ds->index,
837 struct dsa_port *cpu_dp = dp->cpu_dp;
840 err = dev_mc_add(cpu_dp->master, mdb->addr);
844 return dsa_port_notify(dp, DSA_NOTIFIER_HOST_MDB_ADD, &info);
847 int dsa_port_host_mdb_del(const struct dsa_port *dp,
848 const struct switchdev_obj_port_mdb *mdb)
850 struct dsa_notifier_mdb_info info = {
851 .sw_index = dp->ds->index,
855 struct dsa_port *cpu_dp = dp->cpu_dp;
858 err = dev_mc_del(cpu_dp->master, mdb->addr);
862 return dsa_port_notify(dp, DSA_NOTIFIER_HOST_MDB_DEL, &info);
865 int dsa_port_vlan_add(struct dsa_port *dp,
866 const struct switchdev_obj_port_vlan *vlan,
867 struct netlink_ext_ack *extack)
869 struct dsa_notifier_vlan_info info = {
870 .sw_index = dp->ds->index,
876 return dsa_port_notify(dp, DSA_NOTIFIER_VLAN_ADD, &info);
879 int dsa_port_vlan_del(struct dsa_port *dp,
880 const struct switchdev_obj_port_vlan *vlan)
882 struct dsa_notifier_vlan_info info = {
883 .sw_index = dp->ds->index,
888 return dsa_port_notify(dp, DSA_NOTIFIER_VLAN_DEL, &info);
891 int dsa_port_mrp_add(const struct dsa_port *dp,
892 const struct switchdev_obj_mrp *mrp)
894 struct dsa_notifier_mrp_info info = {
895 .sw_index = dp->ds->index,
900 return dsa_port_notify(dp, DSA_NOTIFIER_MRP_ADD, &info);
903 int dsa_port_mrp_del(const struct dsa_port *dp,
904 const struct switchdev_obj_mrp *mrp)
906 struct dsa_notifier_mrp_info info = {
907 .sw_index = dp->ds->index,
912 return dsa_port_notify(dp, DSA_NOTIFIER_MRP_DEL, &info);
915 int dsa_port_mrp_add_ring_role(const struct dsa_port *dp,
916 const struct switchdev_obj_ring_role_mrp *mrp)
918 struct dsa_notifier_mrp_ring_role_info info = {
919 .sw_index = dp->ds->index,
924 return dsa_port_notify(dp, DSA_NOTIFIER_MRP_ADD_RING_ROLE, &info);
927 int dsa_port_mrp_del_ring_role(const struct dsa_port *dp,
928 const struct switchdev_obj_ring_role_mrp *mrp)
930 struct dsa_notifier_mrp_ring_role_info info = {
931 .sw_index = dp->ds->index,
936 return dsa_port_notify(dp, DSA_NOTIFIER_MRP_DEL_RING_ROLE, &info);
939 void dsa_port_set_tag_protocol(struct dsa_port *cpu_dp,
940 const struct dsa_device_ops *tag_ops)
942 cpu_dp->rcv = tag_ops->rcv;
943 cpu_dp->tag_ops = tag_ops;
946 static struct phy_device *dsa_port_get_phy_device(struct dsa_port *dp)
948 struct device_node *phy_dn;
949 struct phy_device *phydev;
951 phy_dn = of_parse_phandle(dp->dn, "phy-handle", 0);
955 phydev = of_phy_find_device(phy_dn);
958 return ERR_PTR(-EPROBE_DEFER);
965 static void dsa_port_phylink_validate(struct phylink_config *config,
966 unsigned long *supported,
967 struct phylink_link_state *state)
969 struct dsa_port *dp = container_of(config, struct dsa_port, pl_config);
970 struct dsa_switch *ds = dp->ds;
972 if (!ds->ops->phylink_validate)
975 ds->ops->phylink_validate(ds, dp->index, supported, state);
978 static void dsa_port_phylink_mac_pcs_get_state(struct phylink_config *config,
979 struct phylink_link_state *state)
981 struct dsa_port *dp = container_of(config, struct dsa_port, pl_config);
982 struct dsa_switch *ds = dp->ds;
985 /* Only called for inband modes */
986 if (!ds->ops->phylink_mac_link_state) {
991 err = ds->ops->phylink_mac_link_state(ds, dp->index, state);
993 dev_err(ds->dev, "p%d: phylink_mac_link_state() failed: %d\n",
999 static void dsa_port_phylink_mac_config(struct phylink_config *config,
1001 const struct phylink_link_state *state)
1003 struct dsa_port *dp = container_of(config, struct dsa_port, pl_config);
1004 struct dsa_switch *ds = dp->ds;
1006 if (!ds->ops->phylink_mac_config)
1009 ds->ops->phylink_mac_config(ds, dp->index, mode, state);
1012 static void dsa_port_phylink_mac_an_restart(struct phylink_config *config)
1014 struct dsa_port *dp = container_of(config, struct dsa_port, pl_config);
1015 struct dsa_switch *ds = dp->ds;
1017 if (!ds->ops->phylink_mac_an_restart)
1020 ds->ops->phylink_mac_an_restart(ds, dp->index);
1023 static void dsa_port_phylink_mac_link_down(struct phylink_config *config,
1025 phy_interface_t interface)
1027 struct dsa_port *dp = container_of(config, struct dsa_port, pl_config);
1028 struct phy_device *phydev = NULL;
1029 struct dsa_switch *ds = dp->ds;
1031 if (dsa_is_user_port(ds, dp->index))
1032 phydev = dp->slave->phydev;
1034 if (!ds->ops->phylink_mac_link_down) {
1035 if (ds->ops->adjust_link && phydev)
1036 ds->ops->adjust_link(ds, dp->index, phydev);
1040 ds->ops->phylink_mac_link_down(ds, dp->index, mode, interface);
1043 static void dsa_port_phylink_mac_link_up(struct phylink_config *config,
1044 struct phy_device *phydev,
1046 phy_interface_t interface,
1047 int speed, int duplex,
1048 bool tx_pause, bool rx_pause)
1050 struct dsa_port *dp = container_of(config, struct dsa_port, pl_config);
1051 struct dsa_switch *ds = dp->ds;
1053 if (!ds->ops->phylink_mac_link_up) {
1054 if (ds->ops->adjust_link && phydev)
1055 ds->ops->adjust_link(ds, dp->index, phydev);
1059 ds->ops->phylink_mac_link_up(ds, dp->index, mode, interface, phydev,
1060 speed, duplex, tx_pause, rx_pause);
1063 const struct phylink_mac_ops dsa_port_phylink_mac_ops = {
1064 .validate = dsa_port_phylink_validate,
1065 .mac_pcs_get_state = dsa_port_phylink_mac_pcs_get_state,
1066 .mac_config = dsa_port_phylink_mac_config,
1067 .mac_an_restart = dsa_port_phylink_mac_an_restart,
1068 .mac_link_down = dsa_port_phylink_mac_link_down,
1069 .mac_link_up = dsa_port_phylink_mac_link_up,
1072 static int dsa_port_setup_phy_of(struct dsa_port *dp, bool enable)
1074 struct dsa_switch *ds = dp->ds;
1075 struct phy_device *phydev;
1076 int port = dp->index;
1079 phydev = dsa_port_get_phy_device(dp);
1084 return PTR_ERR(phydev);
1087 err = genphy_resume(phydev);
1091 err = genphy_read_status(phydev);
1095 err = genphy_suspend(phydev);
1100 if (ds->ops->adjust_link)
1101 ds->ops->adjust_link(ds, port, phydev);
1103 dev_dbg(ds->dev, "enabled port's phy: %s", phydev_name(phydev));
1106 put_device(&phydev->mdio.dev);
1110 static int dsa_port_fixed_link_register_of(struct dsa_port *dp)
1112 struct device_node *dn = dp->dn;
1113 struct dsa_switch *ds = dp->ds;
1114 struct phy_device *phydev;
1115 int port = dp->index;
1116 phy_interface_t mode;
1119 err = of_phy_register_fixed_link(dn);
1122 "failed to register the fixed PHY of port %d\n",
1127 phydev = of_phy_find_device(dn);
1129 err = of_get_phy_mode(dn, &mode);
1131 mode = PHY_INTERFACE_MODE_NA;
1132 phydev->interface = mode;
1134 genphy_read_status(phydev);
1136 if (ds->ops->adjust_link)
1137 ds->ops->adjust_link(ds, port, phydev);
1139 put_device(&phydev->mdio.dev);
1144 static int dsa_port_phylink_register(struct dsa_port *dp)
1146 struct dsa_switch *ds = dp->ds;
1147 struct device_node *port_dn = dp->dn;
1148 phy_interface_t mode;
1151 err = of_get_phy_mode(port_dn, &mode);
1153 mode = PHY_INTERFACE_MODE_NA;
1155 dp->pl_config.dev = ds->dev;
1156 dp->pl_config.type = PHYLINK_DEV;
1157 dp->pl_config.pcs_poll = ds->pcs_poll;
1159 dp->pl = phylink_create(&dp->pl_config, of_fwnode_handle(port_dn),
1160 mode, &dsa_port_phylink_mac_ops);
1161 if (IS_ERR(dp->pl)) {
1162 pr_err("error creating PHYLINK: %ld\n", PTR_ERR(dp->pl));
1163 return PTR_ERR(dp->pl);
1166 err = phylink_of_phy_connect(dp->pl, port_dn, 0);
1167 if (err && err != -ENODEV) {
1168 pr_err("could not attach to PHY: %d\n", err);
1169 goto err_phy_connect;
1175 phylink_destroy(dp->pl);
1179 int dsa_port_link_register_of(struct dsa_port *dp)
1181 struct dsa_switch *ds = dp->ds;
1182 struct device_node *phy_np;
1183 int port = dp->index;
1185 if (!ds->ops->adjust_link) {
1186 phy_np = of_parse_phandle(dp->dn, "phy-handle", 0);
1187 if (of_phy_is_fixed_link(dp->dn) || phy_np) {
1188 if (ds->ops->phylink_mac_link_down)
1189 ds->ops->phylink_mac_link_down(ds, port,
1190 MLO_AN_FIXED, PHY_INTERFACE_MODE_NA);
1191 return dsa_port_phylink_register(dp);
1197 "Using legacy PHYLIB callbacks. Please migrate to PHYLINK!\n");
1199 if (of_phy_is_fixed_link(dp->dn))
1200 return dsa_port_fixed_link_register_of(dp);
1202 return dsa_port_setup_phy_of(dp, true);
1205 void dsa_port_link_unregister_of(struct dsa_port *dp)
1207 struct dsa_switch *ds = dp->ds;
1209 if (!ds->ops->adjust_link && dp->pl) {
1211 phylink_disconnect_phy(dp->pl);
1213 phylink_destroy(dp->pl);
1218 if (of_phy_is_fixed_link(dp->dn))
1219 of_phy_deregister_fixed_link(dp->dn);
1221 dsa_port_setup_phy_of(dp, false);
1224 int dsa_port_get_phy_strings(struct dsa_port *dp, uint8_t *data)
1226 struct phy_device *phydev;
1227 int ret = -EOPNOTSUPP;
1229 if (of_phy_is_fixed_link(dp->dn))
1232 phydev = dsa_port_get_phy_device(dp);
1233 if (IS_ERR_OR_NULL(phydev))
1236 ret = phy_ethtool_get_strings(phydev, data);
1237 put_device(&phydev->mdio.dev);
1241 EXPORT_SYMBOL_GPL(dsa_port_get_phy_strings);
1243 int dsa_port_get_ethtool_phy_stats(struct dsa_port *dp, uint64_t *data)
1245 struct phy_device *phydev;
1246 int ret = -EOPNOTSUPP;
1248 if (of_phy_is_fixed_link(dp->dn))
1251 phydev = dsa_port_get_phy_device(dp);
1252 if (IS_ERR_OR_NULL(phydev))
1255 ret = phy_ethtool_get_stats(phydev, NULL, data);
1256 put_device(&phydev->mdio.dev);
1260 EXPORT_SYMBOL_GPL(dsa_port_get_ethtool_phy_stats);
1262 int dsa_port_get_phy_sset_count(struct dsa_port *dp)
1264 struct phy_device *phydev;
1265 int ret = -EOPNOTSUPP;
1267 if (of_phy_is_fixed_link(dp->dn))
1270 phydev = dsa_port_get_phy_device(dp);
1271 if (IS_ERR_OR_NULL(phydev))
1274 ret = phy_ethtool_get_sset_count(phydev);
1275 put_device(&phydev->mdio.dev);
1279 EXPORT_SYMBOL_GPL(dsa_port_get_phy_sset_count);
1281 int dsa_port_hsr_join(struct dsa_port *dp, struct net_device *hsr)
1283 struct dsa_notifier_hsr_info info = {
1284 .sw_index = dp->ds->index,
1292 err = dsa_port_notify(dp, DSA_NOTIFIER_HSR_JOIN, &info);
1299 void dsa_port_hsr_leave(struct dsa_port *dp, struct net_device *hsr)
1301 struct dsa_notifier_hsr_info info = {
1302 .sw_index = dp->ds->index,
1310 err = dsa_port_notify(dp, DSA_NOTIFIER_HSR_LEAVE, &info);
1312 dev_err(dp->ds->dev,
1313 "port %d failed to notify DSA_NOTIFIER_HSR_LEAVE: %pe\n",
1314 dp->index, ERR_PTR(err));
1317 int dsa_port_tag_8021q_vlan_add(struct dsa_port *dp, u16 vid, bool broadcast)
1319 struct dsa_notifier_tag_8021q_vlan_info info = {
1320 .tree_index = dp->ds->dst->index,
1321 .sw_index = dp->ds->index,
1327 return dsa_broadcast(DSA_NOTIFIER_TAG_8021Q_VLAN_ADD, &info);
1329 return dsa_port_notify(dp, DSA_NOTIFIER_TAG_8021Q_VLAN_ADD, &info);
1332 void dsa_port_tag_8021q_vlan_del(struct dsa_port *dp, u16 vid, bool broadcast)
1334 struct dsa_notifier_tag_8021q_vlan_info info = {
1335 .tree_index = dp->ds->dst->index,
1336 .sw_index = dp->ds->index,
1343 err = dsa_broadcast(DSA_NOTIFIER_TAG_8021Q_VLAN_DEL, &info);
1345 err = dsa_port_notify(dp, DSA_NOTIFIER_TAG_8021Q_VLAN_DEL, &info);
1347 dev_err(dp->ds->dev,
1348 "port %d failed to notify tag_8021q VLAN %d deletion: %pe\n",
1349 dp->index, vid, ERR_PTR(err));